An led module includes an led having an optic axis and a lens fixed over the led for refracting light emitted by the led. The lens has a same cross section along a front-to-rear direction thereof. The lens has an inner incidence surface facing the led and an outer emission surface. The inner incidence surface is concave toward the emission surface. The emission surface has a middle part around the optic axis of the led concave toward the incidence surface, and two convex lateral parts off the optic axis of the led. A peak intensity for the light generated by the led and penetrating through the lens occurs within the convex lateral parts of the emission surface.
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1. An led module comprising:
an led having an optic axis extending through a center thereof along a top to bottom direction; and
a lens fixed over the led for refracting light emitted by the led, the lens having a configuration of a block with a curved top side, two opposite curved lateral sides and a bottom side, a cross section of the lens along a front to rear direction being the same, the lens having an inner incidence surface recessed from the bottom side and facing the led and an outer emission surface at the top side, the inner incidence surface defining a groove receiving the led therein, the inner incidence surface being concave toward the emission surface, the emission surface having a middle part around the optic axis of the led concave toward the incidence surface, and two convex lateral parts off the optic axis of the led;
wherein a peak intensity for light generated by the led and penetrating through the lens occurs at the convex lateral parts of the emission surface;
wherein the groove defined by the incidence surface has an inverted v-shaped configuration; and
wherein the incidence surface has two lateral planar, inclined parts, and an included angle between the inclined parts is 130-140 degrees.
2. The led module as claimed in
3. The led module as claimed in
4. The led module as claimed in
5. The led module as claimed in
6. The led module as claimed in
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1. Technical Field
The present disclosure relates generally to a light emitting diode (LED) module, and more particularly to an LED module for lighting.
2. Description of Related Art
LED lamp, a solid-state lighting, utilizes LEDs as a source of illumination, providing advantages such as resistance to shock and nearly limitless lifetime under specific conditions.
LED lamps have been applied for street lighting recently. Generally, the light from the LEDs has been adjusted by a reflector to illuminate along a predetermined direction. However, such adjustment cannot increase an illuminate area. Further, such adjustment remains a peak intensity of the light occurring around a center axis of each of the LED, which easily results in a discomfort glare, increasing a hidden danger for the traffic safety.
What is needed therefore is an LED module adopted in an LED lamp having a design which can overcome the above limitations.
Many aspects of the present embodiments can be better understood with reference to the following drawings. The components in the drawings are not necessarily drawn to scale, the emphasis instead being placed upon clearly illustrating the principles of the present embodiments. Moreover, in the drawings, like reference numerals designate corresponding parts throughout the several views.
Also referring to
The lens 20 is lengthwise and has the same cross-section along the axis Z. The lens 20 also has an optical axis which is coincident with the axis Y of the LED 10. The lens 20 is symmetric relative to the axis Y and symmetric relative to the axis Z. The lens 20 is formed by cutting an elongated semifinished product into a plurality of finished products each having a predetermined length, in which the semifinished product is made by injection or extrusion molding of PMMA or PC. Therefore, the lens 20 is manufactured easily and has a low manufacturing cost. In the first embodiment, the lens 20 has a length along the axis Z equal to a width along the axis X thereof. A height of the lens 20 is smaller than the length and width thereof, whereby the lens 20 has a configuration of a flat block with two opposite lateral sides being arc in shape. A bottom side of the lens 20 consists of two opposite planar sections and a middle, recessed section interconnecting the two opposite planar section. A top side of the lens 20 consists of three continuous curved sections. The middle, recessed section of the bottom side of the lens 20 forms an inner incidence surface 30 facing the LED 10. The top side of the lens 20 forms an outer emission surface 40 opposite to the inner incidence surface 30. The light from the LED 10 enters the lens 20 via the incidence surface 30, runs through the lens 20, and leaves the lens 20 through the outer emission surface 40. The incidence surface 30 and the emission surface 40 are both smoothly curved surfaces.
The incidence surface 30 is concave upwardly to the emission surface 40 and defines an inverted V-shaped groove recessed upwardly from the bottom side of the lens 20. The incidence surface 30 includes two lateral planar, inclined parts 31 symmetric relative to the axis Y. The two inclined parts 31 confront each other at a peak 32 of the incidence surface 30. The peak 32 is on the axis Y. An included angle of 130-140 degrees is defined between the two inclined parts 31 of the incidence surface 30.
The emission surface 40 is located at a top of the lens 20. The emission surface 40 includes a middle part 42 and two lateral parts 41. The middle part 42 is concave downwardly and toward the incidence surface 30. The lateral parts 41 are convex upwardly. The concave middle part 42 and the convex lateral parts 41 of the emission surface 40 are provided for refracting the light to achieve a desired light-directing optical pattern and characteristic.
As described above, since the half-peak intensity of the light occurs at a large degree offsetting the axis Y, i.e., 60-70 degrees, the LED module can illuminate a larger area compared with the conventional one and avoid the glare generated by the conventional LED module, which is caused by a too large concentration of light intensity at a determined location, i.e., center of the conventional LED module. Furthermore, since the middle part 42 of the emission surface 40 is concave to the incidence surface 30 along the axis Y, the peak light emission for the LED 10 occurs within 45-60 degrees off the axis Y. More light can be adjusted to illumination areas off the axis Y; thus, the light can be uniformly distributed over the illumination areas.
Also referring to
It is believed that the present embodiments and their advantages will be understood from the foregoing description, and it will be apparent that various changes may be made thereto without departing from the spirit and scope of the disclosure or sacrificing all of its material advantages, the examples hereinbefore described merely being preferred or exemplary embodiments of the disclosure.
Patent | Priority | Assignee | Title |
10168467, | Mar 15 2013 | IDEAL Industries Lighting LLC | Luminaires utilizing edge coupling |
10209429, | Mar 15 2013 | IDEAL Industries Lighting LLC | Luminaire with selectable luminous intensity pattern |
10379278, | Mar 15 2012 | IDEAL Industries Lighting LLC | Outdoor and/or enclosed structure LED luminaire outdoor and/or enclosed structure LED luminaire having outward illumination |
10393341, | Apr 24 2015 | ABL IP Holding LLC | Tri-lobe optic and associated light fixtures |
10416377, | May 06 2016 | IDEAL Industries Lighting LLC | Luminaire with controllable light emission |
10436969, | Jan 30 2013 | IDEAL Industries Lighting LLC | Optical waveguide and luminaire incorporating same |
10436970, | Mar 15 2013 | IDEAL Industries Lighting LLC | Shaped optical waveguide bodies |
10502899, | Mar 15 2013 | IDEAL Industries Lighting LLC | Outdoor and/or enclosed structure LED luminaire |
10527785, | May 06 2016 | Cree, Inc | Waveguide-based light sources with dynamic beam shaping |
10739509, | Mar 15 2013 | IDEAL Industries Lighting LLC | Optical waveguide bodies and luminaires utilizing same |
10739513, | Aug 31 2018 | RAB Lighting Inc | Apparatuses and methods for efficiently directing light toward and away from a mounting surface |
10801679, | Oct 08 2018 | RAB Lighting Inc | Apparatuses and methods for assembling luminaires |
10890714, | May 06 2016 | IDEAL Industries Lighting LLC | Waveguide-based light sources with dynamic beam shaping |
11112083, | Mar 15 2013 | IDEAL Industries Lighting LLC | Optic member for an LED light fixture |
11169313, | Mar 15 2013 | IDEAL Industries Lighting LLC | Optical waveguide bodies and luminaires utilizing same |
11346542, | Jun 13 2019 | Apple Inc. | Electronic device with diffusively illuminated housing portions |
11372156, | May 06 2016 | Waveguide-based light sources with dynamic beam shaping | |
11644157, | Jan 30 2013 | IDEAL Industries Lighting LLC | Luminaires using waveguide bodies and optical elements |
11719882, | May 06 2016 | IDEAL Industries Lighting LLC | Waveguide-based light sources with dynamic beam shaping |
8469554, | Feb 12 2009 | SHENZHEN JUFEI OPTOELECTRONICS CO , LTD | Illuminating lens, lighting device, surface light source, and liquid-crystal display apparatus |
8508688, | Feb 12 2009 | SHENZHEN JUFEI OPTOELECTRONICS CO , LTD | Illuminating lens, lighting device, surface light source, and liquid-crystal display apparatus |
8558967, | Feb 12 2009 | SHENZHEN JUFEI OPTOELECTRONICS CO , LTD | Illuminating lens, lighting device, surface light source, and liquid-crystal display apparatus |
8576351, | Feb 12 2009 | SHENZHEN JUFEI OPTOELECTRONICS CO , LTD | Illuminating lens, lighting device, surface light source, and liquid-crystal display apparatus |
8582053, | Feb 12 2009 | SHENZHEN JUFEI OPTOELECTRONICS CO , LTD | Illuminating lens, lighting device, surface light source, and liquid-crystal display apparatus |
8585239, | Oct 19 2012 | Hon Hai Precision Industry Co., Ltd. | Optical lens and light source module having the same |
9291320, | Jan 30 2013 | IDEAL Industries Lighting LLC | Consolidated troffer |
9328893, | Sep 24 2013 | GLASHUTTE LIMBURG LEUCHTEN GMBH & CO , KG | Luminaire with a lampshade |
9366396, | Jan 30 2013 | IDEAL Industries Lighting LLC | Optical waveguide and lamp including same |
9366799, | Mar 15 2013 | IDEAL Industries Lighting LLC | Optical waveguide bodies and luminaires utilizing same |
9389367, | Jan 30 2013 | IDEAL Industries Lighting LLC | Optical waveguide and luminaire incorporating same |
9442243, | Jan 30 2013 | IDEAL Industries Lighting LLC | Waveguide bodies including redirection features and methods of producing same |
9519095, | Jan 30 2013 | IDEAL Industries Lighting LLC | Optical waveguides |
9581751, | Jan 30 2013 | IDEAL Industries Lighting LLC | Optical waveguide and lamp including same |
9606399, | Apr 05 2012 | LG INNOTEK CO , LTD | Member for controlling luminous flux and display device having the same |
9625638, | Mar 15 2013 | IDEAL Industries Lighting LLC | Optical waveguide body |
9645303, | Mar 15 2013 | IDEAL Industries Lighting LLC | Luminaires utilizing edge coupling |
9690029, | Jan 30 2013 | IDEAL Industries Lighting LLC | Optical waveguides and luminaires incorporating same |
9798072, | Mar 15 2013 | IDEAL Industries Lighting LLC | Optical element and method of forming an optical element |
9823408, | Jan 30 2013 | IDEAL Industries Lighting LLC | Optical waveguide and luminaire incorporating same |
9869432, | Jan 30 2013 | IDEAL Industries Lighting LLC | Luminaires using waveguide bodies and optical elements |
9920901, | Mar 15 2013 | IDEAL Industries Lighting LLC | LED lensing arrangement |
D779112, | Apr 24 2015 | ABL IP Holding LLC | Tri-lobe light fixture optic |
Patent | Priority | Assignee | Title |
20060018010, | |||
20060164833, | |||
20060198144, | |||
20080088770, |
Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
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Oct 23 2009 | Fu Zhun Precision Industry (Shen Zhen) Co., Ltd. | (assignment on the face of the patent) | / | |||
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